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Browsing Doctoral Degrees (Electrical and Electronic Engineering) by Title

Browsing Doctoral Degrees (Electrical and Electronic Engineering) by Title

Now showing items 1-20 of 77

A computational architecture for real-time systems

Mostert, Sias (Stellenbosch : Stellenbosch University, 2000-12)

ENGLISH ABSTRACT: The engineering of dependable real-time systems for mission critical applications is a resource intensive and error prone process. Achieving dependability requires a general consensus on the correctness ...
A multi-mode attitude determination and control system for small satellites

Steyn, Willem Hermanus (Stellenbosch : Stellenbosch University, 1995-12)

ENGLISH ABSTRACT: New advanced control techniques for attitude determination and control of small (micro) satellites are presented. The attitude sensors and actuators on small satellites are limited in accuracy and ...
Acceleration based manoeuvre flight control system for unmanned aerial vehicles

Peddle, Iain K. (Stellenbosch : Stellenbosch University, 2008-12)

ENGLISH ABSTRACT: A strategy for the design of an effective, practically feasible, robust, computationally efficient autopilot for three dimensional manoeuvre flight control of Unmanned Aerial Vehicles is presented. The ...
Acceleration based manoeuvre flight control system for unmanned aerial vehicles

Peddle, Iain K. (Stellenbosch : Stellenbosch University, 2008-12)

A strategy for the design of an effective, practically feasible, robust, computationally efficient autopilot for three dimensional manoeuvre flight control of Unmanned Aerial Vehicles is presented. The core feature of ...
Analysis and evaluation of brush-DC equivalent controlled multiphase cage induction machine drive

Gule, Nkosinathi (Stellenbosch : University of Stellenbosch, 2011-03)

ENGLISH ABSTRACT: The multiphase induction machine drive has been under investigation for the last half century. Although it offers several attractive advantages over the conventional three-phase induction machine drive, ...
Analysis and design of conical transmission line power combiners

De Villiers, Dirk I.L. (Stellenbosch : University of Stellenbosch, 2007-12)

This dissertation presents a technique for the design of N-way conical line power combiners, which offers significant advantages over existing axially symmetric combining techniques. A full analytical study of conical ...
The analysis and quantifiaction of uncertainty for least life-cost electrical low voltage distribution design

Heunis, Schalk W. (Schalk Willem) (Stellenbosch : Stellenbosch University, 2000-12)

ENGLISH ABSTRACT: The purpose of this dissertation is to provide methods for designing and managing low voltage residential feeders. These methods can be applied to the problem of planning residential networks under ...
Analysis and synthesis algorithms for the electric screen Jauman electromagnetic wave absorber

Du Toit, Leendert Johannes (Stellenbosch : Stellenbosch University, 1993-11)

ENGLISH ABSTRACT: An extensive literature study revealed numerous Jauman absorber examples with reasonable absorption properties. Unfortunately, tractable and detailed design techniques were found to be scarce, and often ...
Analysis of a radial flux-air-cored permanent magnet machine with a double-sided rotor and non overlapping windings

Randewijk, Peter-Jan (Stellenbosch : Stellenbosch University, 2012-03)

ENGLISH ABSTRACT: In this dissertation a new type of electrical machine, a Radial Flux Air-Cored Permanent Magnet machine with a Double-sided Rotor and utilising concentrated, non-overlapping windings, is proposed. The ...
Analysis of interior permanent magnet motors with non-overlapping windings

Germishuizen, Johannes Jacobus (Stellenbosch : University of Stellenbosch, 2009-03)
Aspects of small airborne passive millimetre-wave imaging systems

Smith, David Michael Patrick (Stellenbosch : University of Stellenbosch, 2010-03)

ENGLISH ABSTRACT: Passive millimetre-wave (PMMW) imaging is a technique that uses radiometers to detect thermal radiation emitted and reflected by metallic and non-metallic objects. While visual and infra-red emissions ...
Automated design of multi-mode fuzzy controllers

Hugo, Etienne Martin (Stellenbosch : Stellenbosch University, 2000-12)

ENGLISH ABSTRACT: A standard fuzzy logic controller is not robust enough to guarantee consistent closed-loop performance for highly non-linear plants. A finely tuned closed-loop response loses relevance as the system ...
Baseband compensation principles for defects in quadrature signal conversion and processing

Van Rooyen, Gert-Jan (Stellenbosch : Stellenbosch University, 2004-04)

ENGLISH ABSTRACT: Keywords: software-defined radio, SDR, quadrature mixing, quadrature modulation, quadrature demodulation, digital compensation, software radio, direct-digital synthesis, DDS. An often-stated goal of ...
A bi-directional, direct conversion converter for use in household renewable energy systems

Schutte, Adriaan Nicholaas (Stellenbosch : University of Stellenbosch, 2009-03)

A bi-directional, direct conversion switch-mode converter is proposed for use in distributed household renewable energy systems. The converter is intended as the central interface between the household energy system’s low ...
Borehole radar system analysis in stratified geological systems applied to imaging of platiniferous reefs in the bushveld igneous

Herselman, Paul Le Roux (Stellenbosch : University of Stellenbosch, 2003-12)

The imaging of platiniferous reefs in the Bushveld Igneous Complex (BIC) is of great economical and sociological importance. Borehole radar technology has been identified as a viable mapping tool to be used in day-to-day ...
Cabling and interfaces for Karoo Array telescopes : modelling and metrology

Van der Merwe, Paul Stephanus (Stellenbosch : University of Stellenbosch, 2011-03)

ENGLISH ABSTRACT: The Karoo Array Telescope (KAT) will be used by South Africa in its bid to host the international Square Kilometre Array (SKA). As the SKA will have orders of magnitude greater sensitivity than existing ...
Cardiac MRI segmentation with conditional random fields

Dreijer, Janto Frederick (Stellenbosch : Stellenbosch University, 2013-12)

ENGLISH ABSTRACT: This dissertation considers automatic segmentation of the left cardiac ventricle in short axis magnetic resonance images. The presence of papillary muscles near the endocardium border makes simple ...
A close range baseband radar transceiver for application in borehole radar systems

Van der Merwe, P.J. (Paulus Jacobus) (Stellenbosch : University of Stellenbosch, 2007-12)

ENGLISH ABSTRACT: A monostatic baseband radar is required with the capability of detecting close range targets that appear at distances comparable to the system’s resolution, without compromising the radar’s maximum range. ...
A comparative analysis of the performance and deployment overhead of parallelized Finite Difference Time Domain (FDTD) algorithms on a selection of high performance multiprocessor computing systems

Ilgner, Robert Georg (Stellenbosch : Stellenbosch University, 2013-12)

ENGLISH ABSTRACT: The parallel FDTD method as used in computational electromagnetics is implemented on a variety of different high performance computing platforms. These parallel FDTD implementations have regularly been ...
A comparison of the performance of high-voltage insulator materials in a severely polluted coastal environment

Vosloo, Wallace L. (Wallace Lockwood) (Stellenbosch : Stellenbosch University, 2002-04)

ENGLISH ABSTRACT: The main aim of this research programme was to compare the relative performance of different insulator materials used in South Africa when subjected to a severe marine pollution environment. A test ...